Facile Synthesis of α-Boryl-Substituted Allylboronate Esters Using Stable Bis[(pinacolato)boryl]methylzinc Reagents

Organic Letters
Minkyeong ShinSeung Hwan Cho

Abstract

Reported herein is the utilization of bis[(pinacolato)boryl]methylzinc halides, whose structures are characterized via single-crystal X-ray analysis, as solid storable reagents for copper-catalyzed coupling with vinyliodonum salts. The reaction proceeds under mild conditions and shows broad scope with respect to vinyliodonium salts, affording various α-boryl-substituted allylboronate esters in good yields. Synthetic applications of the obtained products are also demonstrated.

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